Gemstones of the World

Gemstones of the World PDF Author: Walter Schumann
Publisher: N. A. G. Press
ISBN: 9780719803017
Category : Precious stones
Languages : en
Pages : 279

Get Book Here

Book Description
A comprehensive manual of the world's gemstones and includes more than 1,400 examples. Opposite each illustration, this text provides a description of the particular stone, including details of the properties and chemical composition which makes the stone unique. It also gives information on location of major deposits, and alternative names.

Gemstones of the World

Gemstones of the World PDF Author: Walter Schumann
Publisher: N. A. G. Press
ISBN: 9780719803017
Category : Precious stones
Languages : en
Pages : 279

Get Book Here

Book Description
A comprehensive manual of the world's gemstones and includes more than 1,400 examples. Opposite each illustration, this text provides a description of the particular stone, including details of the properties and chemical composition which makes the stone unique. It also gives information on location of major deposits, and alternative names.

Healing Crystals and Gemstones

Healing Crystals and Gemstones PDF Author: Flora Peschek-Böhmer
Publisher: Konecky Konecky
ISBN: 9781568524429
Category : Body, Mind & Spirit
Languages : en
Pages : 312

Get Book Here

Book Description
An illustrated encyclopedic explanation of the therapeutic uses of crystals and gems.

Gems and Gemstones

Gems and Gemstones PDF Author: Lance Grande
Publisher: University of Chicago Press
ISBN: 0226305112
Category : Design
Languages : en
Pages : 387

Get Book Here

Book Description
"Gems and Gemstones" features nearly 300 color images of cut gems, precious and semiprecious stones, gem-quality mineral specimens, and fine jewelry to be unveiled in the new Grainger Hall of Gems at the Field Museum in Chicago.

Gemstones of the World

Gemstones of the World PDF Author: Walter Schumann
Publisher: Sterling Publishing Company, Inc.
ISBN: 9781402740169
Category : Nature
Languages : en
Pages : 334

Get Book Here

Book Description
Gemstones of the World is truly the single volume that every hobbyist, jeweler, jewelry maker, and rockhound needs: it’s the cornerstone of the field. And this updated edition contains a host of new findings on "Gemstones for Collectors,” additional gems in the "Table of Constants,” and the "double fraction” figures that experts have long wanted--a very special new feature. All the gemstones are treated in their many variations: more than 1,500 full-color photos showcase each precious and semiprecious stone in both its rough, natural, and its polished and cut renditions. Each entry offers complete information on the gemstone’s formation, structure, physical properties, and characteristics, along with the best methods of working, cutting, and polishing it. There are even full treatments of lesser-known gems, from andalusite to vesuvian, and a special section is devoted to rocks as precious stones, including alabaster, onyx, obsidian, and fossils. Organic gem materials are also covered, such as coral, ivory, amber, and pearl. Charts and tables help collectors identify unknown gemstones and check for genuineness.

Gemstones of the World

Gemstones of the World PDF Author: Walter Schumann
Publisher: Sterling Publishing (NY)
ISBN:
Category : Juvenile Nonfiction
Languages : en
Pages : 266

Get Book Here

Book Description
Describes the appearance, formation, physical properties and characteristics, mining, and cutting of precious, semiprecious, and synthetic gemstones.

Gemstones

Gemstones PDF Author: Cally Hall
Publisher: National Geographic Books
ISBN: 0744020557
Category : Nature
Languages : en
Pages : 0

Get Book Here

Book Description
Unearth a treasure trove of knowledge on over 130 gemstones from around the world. Learn how gemstones are formed and how to recognize them by their unique qualities and colors. It’s a wonderful book for beginners, students and gemstone-enthusiasts that includes the latest scientific research and specimen classification. Handbook of Gemstones is filled with all you need to know about the fascinating world of gemstones — cut and uncut stones, organic gemstones and precious metals. Inside, you’ll find: • Fast facts for quick reference, including chemical composition, hardness, gravity, luster and reflective value. • Photo close-ups of key details and highlights of distinguishing features. • Illustrations of faceting and shapes popular for each gemstone. • A detailed introduction to everything a beginner gemologist needs to know, including how gemstones form, the different properties, crystal shapes, faceting and the history of gems. Everything you ever wanted to know about gems Delve into the one-of-a-kind characteristics, colors and attributes of more than 130 gemstones with this compact visual guide. For easy classification, each stone’s entry includes annotated photographs to highlight distinguishing features and concise details about the attributes of gems. Designed for beginners and experienced collectors alike, this gemology book explores what gemstones are, how they are classified and how to identify them by their physical and optical properties. It also shows you how they were fashioned and imitated throughout history. Learn the differences between varieties of cut and uncut stones, organic gemstones and precious metals. It includes a glossary for many more technical and scientific terms, and over 800 high-quality photos of gems, making it the ideal gift for any budding gemologist! Love what you’re seeing? Check out other titles in the series! The DK Handbook series is an incredible collection of titles that fascinate curious minds. Other books include Rocks and Minerals, Dinosaurs, and Prehistoric Life, and Stars and Planets.

Photoatlas of Inclusions in Gemstones

Photoatlas of Inclusions in Gemstones PDF Author: Eduard Josef Gübelin
Publisher:
ISBN: 9783039990290
Category : Crystals
Languages : en
Pages : 829

Get Book Here

Book Description


Artificial Gemstones

Artificial Gemstones PDF Author: Michael O'Donoghue
Publisher: Robert Hale
ISBN: 9780719803314
Category : Crafts & Hobbies
Languages : en
Pages : 294

Get Book Here

Book Description
This title is now in paperback for the first time.Artificial gemstones have been well established in the trade for some time, but now, following further refinements in their manufacture, gemmologists worldwide are facing increasing problems with identification.Today, gem-quality synthetic diamonds, once deemed impossible to produce, are becoming widely available, and, moreover, it is possible to create almost any major gemstone in whatever colour is desired. Then, too, the growth of diamonds by chemical vapour deposition is destined to present further problems. The synthetic products of the past, particularly of the 1960s, are still available, and are puzzling the newer generations of gemmologists who have not encountered them previously.In "Artificial Gemstones", Michael O'Donoghue provides the definitive guide to the various manmade substitutes thus enabling anyone handling gems to identify them accurately. Starting with the theory of synthetic gem manufacture and an explanation of the production methods used for growing and/or improving crystals - with their ornamental application - the book moves on to list and identify the materials themselves. Some of these have natural counterparts; others are new minerals and do not occur in nature. The author lists the identifying internal and external features and tests, and the book contains colour illustrations to display the inclusions found in transparent materials. The book is completed by an extensive bibliography and a useful appendix of trade names.Gemmologists, gem dealers, lapidaries, curators, amateurs and students of gemmology and mineralogy will all find this an indispensable addition to their bookshelves.

Gemstones

Gemstones PDF Author: Keith Wallis (F.G.A.)
Publisher: Acc Art Books
ISBN: 9781851496303
Category : Precious gemstones
Languages : en
Pages : 0

Get Book Here

Book Description
As well as diamonds, emeralds, rubies and sapphires, over 100 gems are featured, with full descriptions, technical details, and tips on how to check for fakes; illustrated throughout with fabulous color photographs to make identification easier.

Geology and Mineralogy of Gemstones

Geology and Mineralogy of Gemstones PDF Author: David P. Turner
Publisher: John Wiley & Sons
ISBN: 1119299853
Category : Science
Languages : en
Pages : 292

Get Book Here

Book Description
Understanding gemstones in a geological context Gemstones are colorful treasures of the Earth that have captivated humans for thousands of years. The physical and chemical characteristics of each type of gem provide insights into the geological processes that created them. Geology and Mineralogy of Gemstones is a textbook aimed at upper-level undergraduate and graduate students. It presents the basic mineralogical and geological knowledge needed to understand gemstones and examines the characteristics and geological origins of different types of gemstone. Volume highlights include: Concepts in mineralogy Structure and chemical composition of minerals Geological processes that lead to the formation and movement of gemstones Equipment and tools used to examine gemstones and their physical properties The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity. Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals.